Elson,R. E., author
Cambridge University, 2001
Buku Teks
Anton Tabah, author
Sahabat , 2000
Buku Teks
Badan Informasi Publik Departemen Komunikasi dan Informasi, 2009
Buku Referensi
edited by Pierre Béguin
[Publisher not identified], [Date of publication not identified]
Buku Teks
Baskara T. Wardaya
Galangpress, 2008
Buku Teks